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1 | # hints/linux.sh |
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2 | # Original version by rsanders |
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3 | # Additional support by Kenneth Albanowski <kjahds@kjahds.com> |
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4 | # |
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5 | # ELF support by H.J. Lu <hjl@nynexst.com> |
6 | # Additional info from Nigel Head <nhead@ESOC.bitnet> |
7 | # and Kenneth Albanowski <kjahds@kjahds.com> |
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8 | # |
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9 | # Consolidated by Andy Dougherty <doughera@lafayette.edu> |
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10 | # |
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11 | # Updated Thu Feb 8 11:56:10 EST 1996 |
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12 | |
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13 | # Updated Thu May 30 10:50:22 EDT 1996 by <doughera@lafayette.edu> |
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14 | |
15 | # Updated Fri Jun 21 11:07:54 EDT 1996 |
16 | # NDBM support for ELF renabled by <kjahds@kjahds.com> |
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17 | |
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18 | # No version of Linux supports setuid scripts. |
19 | d_suidsafe='undef' |
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20 | |
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21 | # Debian and Red Hat, and perhaps other vendors, provide both runtime and |
22 | # development packages for some libraries. The runtime packages contain shared |
23 | # libraries with version information in their names (e.g., libgdbm.so.1.7.3); |
24 | # the development packages supplement this with versionless shared libraries |
25 | # (e.g., libgdbm.so). |
26 | # |
27 | # If you want to link against such a library, you must install the development |
28 | # version of the package. |
29 | # |
30 | # These packages use a -dev naming convention in both Debian and Red Hat: |
31 | # libgdbmg1 (non-development version of GNU libc 2-linked GDBM library) |
32 | # libgdbmg1-dev (development version of GNU libc 2-linked GDBM library) |
33 | # So make sure that for any libraries you wish to link Perl with under |
34 | # Debian or Red Hat you have the -dev packages installed. |
35 | # |
36 | # Some operating systems (e.g., Solaris 2.6) will link to a versioned shared |
37 | # library implicitly. For example, on Solaris, `ld foo.o -lgdbm' will find an |
38 | # appropriate version of libgdbm, if one is available; Linux, however, doesn't |
39 | # do the implicit mapping. |
40 | ignore_versioned_solibs='y' |
41 | |
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42 | # BSD compatibility library no longer needed |
43 | # 'kaffe' has a /usr/lib/libnet.so which is not at all relevant for perl. |
44 | # bind causes issues with several reentrant functions |
45 | set `echo X "$libswanted "| sed -e 's/ bsd / /' -e 's/ net / /' -e 's/ bind / /'` |
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46 | shift |
47 | libswanted="$*" |
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48 | |
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49 | # If you have glibc, then report the version for ./myconfig bug reporting. |
50 | # (Configure doesn't need to know the specific version since it just uses |
51 | # gcc to load the library for all tests.) |
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52 | # We don't use __GLIBC__ and __GLIBC_MINOR__ because they |
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53 | # are insufficiently precise to distinguish things like |
54 | # libc-2.0.6 and libc-2.0.7. |
55 | if test -L /lib/libc.so.6; then |
56 | libc=`ls -l /lib/libc.so.6 | awk '{print $NF}'` |
57 | libc=/lib/$libc |
58 | fi |
59 | |
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60 | # Configure may fail to find lstat() since it's a static/inline |
61 | # function in <sys/stat.h>. |
62 | d_lstat=define |
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63 | |
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64 | # malloc wrap works |
65 | case "$usemallocwrap" in |
66 | '') usemallocwrap='define' ;; |
67 | esac |
68 | |
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69 | # The system malloc() is about as fast and as frugal as perl's. |
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70 | # Since the system malloc() has been the default since at least |
71 | # 5.001, we might as well leave it that way. --AD 10 Jan 2002 |
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72 | case "$usemymalloc" in |
73 | '') usemymalloc='n' ;; |
74 | esac |
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75 | |
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76 | # Check if we're about to use Intel's ICC compiler |
77 | case "`${cc:-cc} -V 2>&1`" in |
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78 | *"Intel(R) C++ Compiler"*|*"Intel(R) C Compiler"*) |
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79 | # This is needed for Configure's prototype checks to work correctly |
80 | ccflags="-we147 $ccflags" |
81 | # If we're using ICC, we usually want the best performance |
82 | case "$optimize" in |
83 | '') optimize='-O3' ;; |
84 | esac |
85 | ;; |
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86 | *"Sun C"*) |
87 | optimize='-xO2' |
88 | cccdlflags='-KPIC' |
89 | lddlflags='-G -Bdynamic' |
90 | ;; |
06d57135 |
91 | esac |
92 | |
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93 | case "$optimize" in |
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94 | # use -O2 by default ; -O3 doesn't seem to bring significant benefits with gcc |
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95 | '') |
96 | optimize='-O2' |
97 | case "`uname -m`" in |
98 | ppc*) |
99 | # on ppc, it seems that gcc (at least gcc 3.3.2) isn't happy |
100 | # with -O2 ; so downgrade to -O1. |
101 | optimize='-O1' |
102 | ;; |
103 | esac |
104 | ;; |
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105 | esac |
106 | |
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107 | # Are we using ELF? Thanks to Kenneth Albanowski <kjahds@kjahds.com> |
108 | # for this test. |
109 | cat >try.c <<'EOM' |
110 | /* Test for whether ELF binaries are produced */ |
111 | #include <fcntl.h> |
112 | #include <stdlib.h> |
113 | main() { |
114 | char buffer[4]; |
115 | int i=open("a.out",O_RDONLY); |
116 | if(i==-1) |
117 | exit(1); /* fail */ |
118 | if(read(i,&buffer[0],4)<4) |
119 | exit(1); /* fail */ |
120 | if(buffer[0] != 127 || buffer[1] != 'E' || |
121 | buffer[2] != 'L' || buffer[3] != 'F') |
122 | exit(1); /* fail */ |
123 | exit(0); /* succeed (yes, it's ELF) */ |
124 | } |
125 | EOM |
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126 | if ${cc:-gcc} try.c >/dev/null 2>&1 && $run ./a.out; then |
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127 | cat <<'EOM' >&4 |
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128 | |
129 | You appear to have ELF support. I'll try to use it for dynamic loading. |
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130 | If dynamic loading doesn't work, read hints/linux.sh for further information. |
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131 | EOM |
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132 | |
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133 | else |
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134 | cat <<'EOM' >&4 |
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135 | |
136 | You don't have an ELF gcc. I will use dld if possible. If you are |
137 | using a version of DLD earlier than 3.2.6, or don't have it at all, you |
138 | should probably upgrade. If you are forced to use 3.2.4, you should |
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139 | uncomment a couple of lines in hints/linux.sh and restart Configure so |
140 | that shared libraries will be disallowed. |
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141 | |
142 | EOM |
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143 | lddlflags="-r $lddlflags" |
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144 | # These empty values are so that Configure doesn't put in the |
145 | # Linux ELF values. |
146 | ccdlflags=' ' |
147 | cccdlflags=' ' |
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148 | ccflags="-DOVR_DBL_DIG=14 $ccflags" |
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149 | so='sa' |
150 | dlext='o' |
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151 | nm_so_opt=' ' |
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152 | ## If you are using DLD 3.2.4 which does not support shared libs, |
153 | ## uncomment the next two lines: |
154 | #ldflags="-static" |
155 | #so='none' |
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156 | |
157 | # In addition, on some systems there is a problem with perl and NDBM |
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158 | # which causes AnyDBM and NDBM_File to lock up. This is evidenced |
159 | # in the tests as AnyDBM just freezing. Apparently, this only |
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160 | # happens on a.out systems, so we disable NDBM for all a.out linux |
161 | # systems. If someone can suggest a more robust test |
162 | # that would be appreciated. |
163 | # |
164 | # More info: |
165 | # Date: Wed, 7 Feb 1996 03:21:04 +0900 |
166 | # From: Jeffrey Friedl <jfriedl@nff.ncl.omron.co.jp> |
167 | # |
168 | # I tried compiling with DBM support and sure enough things locked up |
169 | # just as advertised. Checking into it, I found that the lockup was |
170 | # during the call to dbm_open. Not *in* dbm_open -- but between the call |
171 | # to and the jump into. |
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172 | # |
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173 | # To make a long story short, making sure that the *.a and *.sa pairs of |
174 | # /usr/lib/lib{m,db,gdbm}.{a,sa} |
175 | # were perfectly in sync took care of it. |
176 | # |
177 | # This will generate a harmless Whoa There! message |
178 | case "$d_dbm_open" in |
179 | '') cat <<'EOM' >&4 |
180 | |
181 | Disabling ndbm. This will generate a Whoa There message in Configure. |
182 | Read hints/linux.sh for further information. |
183 | EOM |
184 | # You can override this with Configure -Dd_dbm_open |
185 | d_dbm_open=undef |
186 | ;; |
187 | esac |
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188 | fi |
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189 | |
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190 | rm -f try.c a.out |
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191 | |
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192 | if /bin/sh -c exit; then |
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193 | echo '' |
194 | echo 'You appear to have a working bash. Good.' |
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195 | else |
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196 | cat << 'EOM' >&4 |
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197 | |
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198 | *********************** Warning! ********************* |
199 | It would appear you have a defective bash shell installed. This is likely to |
200 | give you a failure of op/exec test #5 during the test phase of the build, |
201 | Upgrading to a recent version (1.14.4 or later) should fix the problem. |
202 | ****************************************************** |
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203 | EOM |
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204 | |
205 | fi |
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206 | |
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207 | # On SPARClinux, |
208 | # The following csh consistently coredumped in the test directory |
209 | # "/home/mikedlr/perl5.003_94/t", though not most other directories. |
210 | |
211 | #Name : csh Distribution: Red Hat Linux (Rembrandt) |
212 | #Version : 5.2.6 Vendor: Red Hat Software |
213 | #Release : 3 Build Date: Fri May 24 19:42:14 1996 |
214 | #Install date: Thu Jul 11 16:20:14 1996 Build Host: itchy.redhat.com |
215 | #Group : Shells Source RPM: csh-5.2.6-3.src.rpm |
216 | #Size : 184417 |
217 | #Description : BSD c-shell |
218 | |
219 | # For this reason I suggest using the much bug-fixed tcsh for globbing |
220 | # where available. |
221 | |
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222 | # November 2001: That warning's pretty old now and probably not so |
223 | # relevant, especially since perl now uses File::Glob for globbing. |
224 | # We'll still look for tcsh, but tone down the warnings. |
225 | # Andy Dougherty, Nov. 6, 2001 |
226 | if $csh -c 'echo $version' >/dev/null 2>&1; then |
227 | echo 'Your csh is really tcsh. Good.' |
228 | else |
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229 | if xxx=`./UU/loc tcsh blurfl $pth`; $test -f "$xxx"; then |
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230 | echo "Found tcsh. I'll use it for globbing." |
231 | # We can't change Configure's setting of $csh, due to the way |
232 | # Configure handles $d_portable and commands found in $loclist. |
233 | # We can set the value for CSH in config.h by setting full_csh. |
234 | full_csh=$xxx |
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235 | elif [ -f "$csh" ]; then |
236 | echo "Couldn't find tcsh. Csh-based globbing might be broken." |
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237 | fi |
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238 | fi |
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239 | |
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240 | # Shimpei Yamashita <shimpei@socrates.patnet.caltech.edu> |
241 | # Message-Id: <33EF1634.B36B6500@pobox.com> |
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242 | # |
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243 | # The DR2 of MkLinux (osname=linux,archname=ppc-linux) may need |
244 | # special flags passed in order for dynamic loading to work. |
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245 | # instead of the recommended: |
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246 | # |
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247 | # ccdlflags='-rdynamic' |
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248 | # |
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249 | # it should be: |
250 | # ccdlflags='-Wl,-E' |
17ff8a05 |
251 | # |
252 | # So if your DR2 (DR3 came out summer 1998, consider upgrading) |
253 | # has problems with dynamic loading, uncomment the |
254 | # following three lines, make distclean, and re-Configure: |
255 | #case "`uname -r | sed 's/^[0-9.-]*//'``arch`" in |
256 | #'osfmach3ppc') ccdlflags='-Wl,-E' ;; |
257 | #esac |
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258 | |
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259 | case "`uname -m`" in |
260 | sparc*) |
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261 | case "$cccdlflags" in |
262 | *-fpic*) cccdlflags="`echo $cccdlflags|sed 's/-fpic/-fPIC/'`" ;; |
4cd66402 |
263 | *-fPIC*) ;; |
7cd1f58a |
264 | *) cccdlflags="$cccdlflags -fPIC" ;; |
265 | esac |
266 | ;; |
267 | esac |
268 | |
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269 | # SuSE8.2 has /usr/lib/libndbm* which are ld scripts rather than |
270 | # true libraries. The scripts cause binding against static |
271 | # version of -lgdbm which is a bad idea. So if we have 'nm' |
272 | # make sure it can read the file |
273 | # NI-S 2003/08/07 |
274 | if [ -r /usr/lib/libndbm.so -a -x /usr/bin/nm ] ; then |
275 | if /usr/bin/nm /usr/lib/libndbm.so >/dev/null 2>&1 ; then |
276 | echo 'Your shared -lndbm seems to be a real library.' |
277 | else |
278 | echo 'Your shared -lndbm is not a real library.' |
279 | set `echo X "$libswanted "| sed -e 's/ ndbm / /'` |
280 | shift |
281 | libswanted="$*" |
282 | fi |
283 | fi |
284 | |
285 | |
286 | # This script UU/usethreads.cbu will get 'called-back' by Configure |
104d25b7 |
287 | # after it has prompted the user for whether to use threads. |
288 | cat > UU/usethreads.cbu <<'EOCBU' |
289 | case "$usethreads" in |
290 | $define|true|[yY]*) |
4d76a344 |
291 | ccflags="-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS $ccflags" |
104d25b7 |
292 | set `echo X "$libswanted "| sed -e 's/ c / pthread c /'` |
293 | shift |
294 | libswanted="$*" |
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295 | |
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296 | # Somehow at least in Debian 2.2 these manage to escape |
297 | # the #define forest of <features.h> and <time.h> so that |
c95a4480 |
298 | # the hasproto macro of Configure doesn't see these protos, |
299 | # even with the -D_GNU_SOURCE. |
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300 | |
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301 | d_asctime_r_proto="$define" |
47b8d1e2 |
302 | d_crypt_r_proto="$define" |
a48ec845 |
303 | d_ctime_r_proto="$define" |
304 | d_gmtime_r_proto="$define" |
305 | d_localtime_r_proto="$define" |
01b53dac |
306 | d_random_r_proto="$define" |
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307 | |
104d25b7 |
308 | ;; |
309 | esac |
310 | EOCBU |
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311 | |
312 | cat > UU/uselargefiles.cbu <<'EOCBU' |
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313 | # This script UU/uselargefiles.cbu will get 'called-back' by Configure |
7f2eea8e |
314 | # after it has prompted the user for whether to use large files. |
315 | case "$uselargefiles" in |
316 | ''|$define|true|[yY]*) |
9422c00b |
317 | # Keep this in the left margin. |
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318 | ccflags_uselargefiles="-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" |
9422c00b |
319 | |
45c9e83b |
320 | ccflags="$ccflags $ccflags_uselargefiles" |
7f2eea8e |
321 | ;; |
322 | esac |
323 | EOCBU |
3fe280b7 |
324 | |
325 | # Purify fails to link Perl if a "-lc" is passed into its linker |
326 | # due to duplicate symbols. |
327 | case "$PURIFY" in |
328 | $define|true|[yY]*) |
329 | set `echo X "$libswanted "| sed -e 's/ c / /'` |
330 | shift |
331 | libswanted="$*" |
332 | ;; |
333 | esac |